package com.lanou.zy.projecta.util.PhotoView;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;

import junit.framework.Assert;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Created by dllo on 15/11/10.
 */
public class QQLogin {
    private static final String TAG = "SDK_Sample.Util";
    private static Dialog mProgressDialog;
    private static Toast mToast;

    /*
     * Convert byte[] to hex
     * string.这里我们可以将byte转换成int，然后利用Integer.toHexString(int)来转换成16进制字符串。
     *
     * @param src byte[] data
     *
     * @return hex string
     */
    public static String bytesToHexString(byte[] src) {
        StringBuilder stringBuilder = new StringBuilder("");
        if (src == null || src.length <= 0) {
            return null;
        }
        for (int i = 0; i < src.length; i++) {
            int v = src[i] & 0xFF;
            String hv = Integer.toHexString(v);
            if (hv.length() < 2) {
                stringBuilder.append(0);
            }
            stringBuilder.append(hv);
        }
        return stringBuilder.toString();
    }

    /**
     * Convert hex string to byte[]
     *
     * @param hexString
     *            the hex string
     * @return byte[]
     */
    public static byte[] hexStringToBytes(String hexString) {
        if (hexString == null || hexString.equals("")) {
            return null;
        }
        hexString = hexString.toUpperCase();
        int length = hexString.length() / 2;
        char[] hexChars = hexString.toCharArray();
        byte[] d = new byte[length];
        for (int i = 0; i < length; i++) {
            int pos = i * 2;
            d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
        }
        return d;
    }

    /**
     * Convert char to byte
     *
     * @param c
     *            char
     * @return byte
     */
    private static byte charToByte(char c) {
        return (byte) "0123456789ABCDEF".indexOf(c);
    }

    /*
     * 16进制数字字符集
     */
    private static String hexString = "0123456789ABCDEF";

    /*
     * 将字符串编码成16进制数字,适用于所有字符（包括中文）
     */
    public static String toHexString(String str) {
        // 根据默认编码获取字节数组
        byte[] bytes = str.getBytes();
        StringBuilder sb = new StringBuilder(bytes.length * 2);
        // 将字节数组中每个字节拆解成2位16进制整数
        for (int i = 0; i < bytes.length; i++) {
            sb.append(hexString.charAt((bytes[i] & 0xf0) >> 4));
            sb.append(hexString.charAt((bytes[i] & 0x0f) >> 0));
        }
        return sb.toString();
    }

    // 转换十六进制编码为字符串
    public static String hexToString(String s) {
        if ("0x".equals(s.substring(0, 2))) {
            s = s.substring(2);
        }
        byte[] baKeyword = new byte[s.length() / 2];
        for (int i = 0; i < baKeyword.length; i++) {
            try {
                baKeyword[i] = (byte) (0xff & Integer.parseInt(
                        s.substring(i * 2, i * 2 + 2), 16));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        try {
            s = new String(baKeyword, "utf-8");// UTF-16le:Not
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        return s;
    }

    public static byte[] bmpToByteArray(final Bitmap bmp,
                                        final boolean needRecycle) {
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        bmp.compress(Bitmap.CompressFormat.PNG, 100, output);
        if (needRecycle) {
            bmp.recycle();
        }
        byte[] result = output.toByteArray();
        try {
            output.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    public static byte[] getHtmlByteArray(final String url) {
        URL htmlUrl = null;
        InputStream inStream = null;
        try {
            htmlUrl = new URL(url);
            URLConnection connection = htmlUrl.openConnection();
            HttpURLConnection httpConnection = (HttpURLConnection) connection;
            int responseCode = httpConnection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                inStream = httpConnection.getInputStream();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] data = inputStreamToByte(inStream);
        return data;
    }

    public static byte[] inputStreamToByte(InputStream is) {
        try {
            ByteArrayOutputStream bytestream = new ByteArrayOutputStream();
            int ch;
            while ((ch = is.read()) != -1) {
                bytestream.write(ch);
            }
            byte imgdata[] = bytestream.toByteArray();
            bytestream.close();
            return imgdata;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static byte[] readFromFile(String fileName, int offset, int len) {
        if (fileName == null) {
            return null;
        }

        File file = new File(fileName);
        if (!file.exists()) {
            Log.i(TAG, "readFromFile: file not found");
            return null;
        }
        if (len == -1) {
            len = (int) file.length();
        }
        Log.d(TAG, "readFromFile : offset = " + offset + " len = " + len
                + " offset + len = " + (offset + len));
        if (offset < 0) {
            Log.e(TAG, "readFromFile invalid offset:" + offset);
            return null;
        }
        if (len <= 0) {
            Log.e(TAG, "readFromFile invalid len:" + len);
            return null;
        }
        if (offset + len > (int) file.length()) {
            Log.e(TAG, "readFromFile invalid file len:" + file.length());
            return null;
        }
        byte[] b = null;
        try {
            RandomAccessFile in = new RandomAccessFile(fileName, "r");
            b = new byte[len];
            in.seek(offset);
            in.readFully(b);
            in.close();
        } catch (Exception e) {
            Log.e(TAG, "readFromFile : errMsg = " + e.getMessage());
            e.printStackTrace();
        }
        return b;
    }

    public static int computeSampleSize(BitmapFactory.Options options,

                                        int minSideLength, int maxNumOfPixels) {
        int initialSize = computeInitialSampleSize(options, minSideLength,maxNumOfPixels);
        int roundedSize;
        if (initialSize <= 8) {
            roundedSize = 1;
            while (roundedSize < initialSize) {
                roundedSize <<= 1;
            }
        } else {
            roundedSize = (initialSize + 7) / 8 * 8;
        }
        return roundedSize;
    }

    private static int computeInitialSampleSize(BitmapFactory.Options options,
                                                int minSideLength, int maxNumOfPixels) {
        double w = options.outWidth;
        double h = options.outHeight;
        int lowerBound = (maxNumOfPixels == -1) ? 1 : (int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels));
        int upperBound = (minSideLength == -1) ? 128 : (int) Math.min(Math.floor(w / minSideLength), Math.floor(h / minSideLength));
        if (upperBound < lowerBound) {
            // return the larger one when there is no overlapping zone.
            return lowerBound;
        }
        if ((maxNumOfPixels == -1) && (minSideLength == -1)) {
            return 1;
        } else if (minSideLength == -1) {
            return lowerBound;
        } else {
            return upperBound;
        }
    }

    /**
     * 以最省内存的方式读取图片
     */
    public static Bitmap readBitmap(final String path) {
        try {
            FileInputStream stream = new FileInputStream(new File(path + "test.jpg"));
            BitmapFactory.Options opts = new BitmapFactory.Options();
            opts.inSampleSize = 8;
            opts.inPurgeable = true;
            opts.inInputShareable = true;
            Bitmap bitmap = BitmapFactory.decodeStream(stream, null, opts);
            return bitmap;
        } catch (Exception e) {
            return null;
        }
    }

    private static final int MAX_DECODE_PICTURE_SIZE = 1920 * 1440;

    public static Bitmap extractThumbNail(final String path, final int height,final int width, final boolean crop) {
        Assert.assertTrue(path != null && !path.equals("") && height > 0 && width > 0);
        BitmapFactory.Options options = new BitmapFactory.Options();
        try {
            options.inJustDecodeBounds = true;
            Bitmap tmp = BitmapFactory.decodeFile(path, options);
            if (tmp != null) {
                tmp.recycle();
                tmp = null;
            }
            Log.d(TAG, "extractThumbNail: round=" + width + "x" + height + ", crop=" + crop);
            final double beY = options.outHeight * 1.0 / height;
            final double beX = options.outWidth * 1.0 / width;
            Log.d(TAG, "extractThumbNail: extract beX = " + beX + ", beY = " + beY);
            options.inSampleSize = (int) (crop ? (beY > beX ? beX : beY) : (beY < beX ? beX : beY));
            if (options.inSampleSize <= 1) {
                options.inSampleSize = 1;
            }

            // NOTE: out of memory error
            while (options.outHeight * options.outWidth / options.inSampleSize > MAX_DECODE_PICTURE_SIZE) {
                options.inSampleSize++;
            }
            int newHeight = height;
            int newWidth = width;
            if (crop) {
                if (beY > beX) {
                    newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
                } else {
                    newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
                }
            } else {
                if (beY < beX) {
                    newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
                } else {
                    newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
                }
            }
            options.inJustDecodeBounds = false;
            Log.i(TAG, "bitmap required size=" + newWidth + "x" + newHeight + ", orig=" + options.outWidth + "x" + options.outHeight+ ", sample=" + options.inSampleSize);
            Bitmap bm = BitmapFactory.decodeFile(path, options);
            if (bm == null) {
                Log.e(TAG, "bitmap decode failed");
                return null;
            }
            Log.i(TAG,"bitmap decoded size=" + bm.getWidth() + "x"+ bm.getHeight());
            final Bitmap scale = Bitmap.createScaledBitmap(bm, newWidth,newHeight, true);
            if (scale != null) {
                bm.recycle();
                bm = scale;
            }

            if (crop) {
                final Bitmap cropped = Bitmap.createBitmap(bm,(bm.getWidth() - width) >> 1,(bm.getHeight() - height) >> 1, width, height);
                if (cropped == null) {
                    return bm;
                }
                bm.recycle();
                bm = cropped;
                Log.i(TAG,"bitmap croped size=" + bm.getWidth() + "x"+ bm.getHeight());
            }
            return bm;
        } catch (final OutOfMemoryError e) {
            Log.e(TAG, "decode bitmap failed: " + e.getMessage());
            options = null;
        }
        return null;
    }

    public static final void showResultDialog(Context context, String msg,String title) {
        if (msg == null)
            return;
        String rmsg = msg.replace(",", "\n");
        Log.d("Util", rmsg);
        new AlertDialog.Builder(context).setTitle(title).setMessage(rmsg).setNegativeButton("知道了", null).create().show();
    }

    public static final void showProgressDialog(Context context, String title,
                                                String message) {
        dismissDialog();
        if (TextUtils.isEmpty(title)) {
            title = "请稍候";
        }
        if (TextUtils.isEmpty(message)) {
            message = "正在加载...";
        }
        mProgressDialog = ProgressDialog.show(context, title, message);
    }

    public static final void dismissDialog() {
        if (mProgressDialog != null) {
            mProgressDialog.dismiss();
            mProgressDialog = null;
        }
    }

    /**
     * 打印消息并且用Toast显示消息
     *
     * @param activity
     * @param message
     * @param logLevel
     *            填d, w, e分别代表debug, warn, error; 默认是debug
     */
    public static final void toastMessage(final Activity activity,final String message, String logLevel) {
        if ("w".equals(logLevel)) {
            Log.w("sdkDemo", message);
        } else if ("e".equals(logLevel)) {
            Log.e("sdkDemo", message);
        } else {
            Log.d("sdkDemo", message);
        }
        activity.runOnUiThread(new Runnable() {
            public void run() {
                // TODO Auto-generated method stub
                if (mToast != null) {
                    mToast.cancel();
                    mToast = null;
                }
                mToast = Toast.makeText(activity, message, Toast.LENGTH_SHORT);
                mToast.show();
            }
        });
    }

    /**
     * 打印消息并且用Toast显示消息
     *
     * @param activity
     * @param message
     */
    public static final void toastMessage(final Activity activity,final String message) {
        toastMessage(activity, message, null);
    }

    /**
     * 根据一个网络连接(String)获取bitmap图像
     *
     * @param imageUri
     * @return
     * @throws MalformedURLException
     */
    public static Bitmap getbitmap(String imageUri) {
        Log.v(TAG, "getbitmap:" + imageUri);
        // 显示网络上的图片
        Bitmap bitmap = null;
        try {
            URL myFileUrl = new URL(imageUri);
            HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
            conn.setDoInput(true);
            conn.connect();
            InputStream is = conn.getInputStream();
            bitmap = BitmapFactory.decodeStream(is);
            is.close();
            Log.v(TAG, "image download finished." + imageUri);
        } catch (IOException e) {
            e.printStackTrace();
            Log.v(TAG, "getbitmap bmp fail---");
            return null;
        }
        return bitmap;
    }
}
